PAC2013 - List of Authors (Oganesyan, K.B.)

Paper	Title	Page
MOPHO01	Creation of Gamma Radiation Using Anihilation of Channeled Positrons in Crystals	231
	K.B. Oganesyan ANSL, Yerevan, Armenia
	Funding: ISTC A possibility of channeling of low-energy (5-20Mev) relativistic positrons with coaxial symmetry around separate crystal axes of negative ions in some types of crystals, is shown. On the example of ionic crystal CsCl is calculated the influence of temperature on the character of effective potential of channeling. The principal causes of positrons de-channeling (the scattering on media electrons and annihilation processes) are investigated in details. The lifetime of a positron in the regime of channeling is estimated at 10^-6 sec which is 10⁸-10⁹ times is bigger than at usual cases.

MOPHO02	How Acts Plane Wiggler Magnetic Field Inhomogeneity on the Spontaneous Radiation and the Gain	234
	K.B. Oganesyan ANSL, Yerevan, Armenia
	A relativistic electron motion in a transversally inhomogeneous magnetic field of a wiggler is shown to consist of fast(undulator) and slow(strophotron) components. By separating fast and slow motions and by averaging equations of motion over fast undulator oscillations, we find spectral intensity of strophotron spontaneous emission in such a system. By solving similarly equations of motion in the presence of an external light wave, we find the gain in a Free-Electron Laser based on the interaction of light with the strophotron mode of the electron motion. Both the strophotron gain and the corresponding intensity of spontaneous emission are shown to be well separated spectrally from the usual undulator parts.

MOPHO03	Generation of Intensive Transition Radiation in Modulated Medium	237
	K.B. Oganesyan ANSL, Yerevan, Armenia
	Funding: ISTC The 3D spin-glass system in the external standing electromagnetic field is considered. It is shown on an example of amorphous quartz, under the influence of a standing microwave field, at its certain parameters, superlattice is created in the medium where difference in values of dielectric constants of neighboring layers can be up to third order. Note that this superlattice exists during the nanosecond however it is sufficient for using it as a radiator for generation of transition radiation by relativistic electrons.

Paper

Title

Page

Creation of Gamma Radiation Using Anihilation of Channeled Positrons in Crystals

231

K.B. Oganesyan
ANSL, Yerevan, Armenia

Funding: ISTC
A possibility of channeling of low-energy (5-20Mev) relativistic positrons with coaxial symmetry around separate crystal axes of negative ions in some types of crystals, is shown. On the example of ionic crystal CsCl is calculated the influence of temperature on the character of effective potential of channeling. The principal causes of positrons de-channeling (the scattering on media electrons and annihilation processes) are investigated in details. The lifetime of a positron in the regime of channeling is estimated at 10^-6 sec which is 10⁸-10⁹ times is bigger than at usual cases.

MOPHO02

How Acts Plane Wiggler Magnetic Field Inhomogeneity on the Spontaneous Radiation and the Gain

234

K.B. Oganesyan
ANSL, Yerevan, Armenia

A relativistic electron motion in a transversally inhomogeneous magnetic field of a wiggler is shown to consist of fast(undulator) and slow(strophotron) components. By separating fast and slow motions and by averaging equations of motion over fast undulator oscillations, we find spectral intensity of strophotron spontaneous emission in such a system. By solving similarly equations of motion in the presence of an external light wave, we find the gain in a Free-Electron Laser based on the interaction of light with the strophotron mode of the electron motion. Both the strophotron gain and the corresponding intensity of spontaneous emission are shown to be well separated spectrally from the usual undulator parts.

MOPHO03

Generation of Intensive Transition Radiation in Modulated Medium

237

K.B. Oganesyan
ANSL, Yerevan, Armenia

Funding: ISTC
The 3D spin-glass system in the external standing electromagnetic field is considered. It is shown on an example of amorphous quartz, under the influence of a standing microwave field, at its certain parameters, superlattice is created in the medium where difference in values of dielectric constants of neighboring layers can be up to third order. Note that this superlattice exists during the nanosecond however it is sufficient for using it as a radiator for generation of transition radiation by relativistic electrons.